Tractor front loader rapid-attachment system - has spring-loaded bolts with flattened portions passing through slots

摘要

The rapid-attachment system is for a front-end loader to a tractor. The loader a frame with two parallel swing arms supporting an such as a fork at the free ends, while hydraulic rams act between frame and arms. A frame (3,4) fixed permanently to the tractor (1) has two vertical U-section members whose flanges extend forward. A bolt turning in the flanges extends through each member, a handle being fixed to one end of A flattened portion is formed in the middle part of each bolt, which is spring-loaded so as to keep this portion vertical. A lecking device holds the bolt with the flattened portion in a horizontal position in opposition to the spring, releasing it on engagement in the hole.